Umbrella cap



FIG. 1 shows a perspective view of a design for an umbrella cap;

FIG. 2 is a first side view thereof;

FIG. 3 shows a second side view of FIG. 1;

FIG. 4 is a top view thereof; and,

FIG. 5 is a perspective view thereof in use in an umbrella.

The broken-line features in the figures are for illustrative purposesonly and form no part of the claimed design. The umbrella in FIG. 5 isunclaimed environmental subject matter.

CLAIM The ornamental design for an umbrella cap, as shown and described.